Risk factors for unplanned 31-day readmission after surgery for colorectal cancer patients: a meta-analysis

BMC Gastroenterology

Table 2 Heterogeneity test and meta-analysis results of risk factors for UR within 31 days after CRC surgery

Risk Factors	Study Number	Heterogeneity		Effect Model	OR	95%CI	Z	P
Risk Factors	Study Number	I² (%)	P	Effect Model	OR	95%CI	Z	P
Age	4[16, 25, 35, 36]	89%	< 0.001	Random	1.13	[1.03,1.25]	28.33	0.01
Female	4[16, 35, 36]	26%	0.26	Fixed	0.85	[0.83,0.87]	16.92	< 0.001
Postoperative complications	5[10, 25,26,27, 36]	93%	< 0.001	Random	1.87	[1.32,2.65]	3.54	0.0004
TNM ≥ III	3[25, 27, 31]	10%	0.33	Fixed	2.01	[1.73,2.33]	9.26	< 0.001
Tumor site: rectum	4[10, 16, 26, 30]	74%	0.008	Random	1.64	[1.19,2.26]	3.04	0.002
Disseminated tumor	3[18, 32, 34]	91%	< 0.001	Random	1.05	[0.77,1.45]	0.32	0.75
Stoma creation	4[16, 25, 26, 33, 34]	97%	< 0.001	Random	1.70	[1.06,2.71]	2.21	0.03
Complicated diabetes	3[18, 25, 35]	96%	< 0.001	Random	1.56	[1.00,2.42]	1.95	0.05
CCI	4[10, 16, 29, 36]	71%	0.02	Random	1.27	[1.21,1.34]	8.89	< 0.001
BT	3[10, 18, 36]	86%	0.001	Random	1.24	[1.09,1.41]	3.23	0.001
LOS	3[10, 16, 18]	7%	0.34	Fixed	1.65	[1.58,1.72]	22.82	< 0.001
Surgical approach	5[10, 16, 18, 29, 32]	94%	< 0.001	Random	1.22	[1.01,1.47]	2.09	0.04

CCI: Charlson Comorbidity Index; BT: blood transfusion; LOS: length of hospital stays

ISSN: 1471-230X